Depending on the varying political leanings of your family members, you may have an extra dose of grievances to air this Festivus.

Dec. 23 marks the official celebration of Festivus, the secular parody holiday made famous by "The Strike" episode of "Seinfeld." Although the holiday technically can be celebrated whenever you need to air some grievances, fans chose Dec. 23 because of Kramer's work request to take the day off to attend the Costanza Festivus gathering.

Advertisement

Celebrating is simple: Find a metal pole, air your grievances and prepare for the feats of strength.

Since the airing of the 1997 episode, Festivus has taken on a life of its own, spawning parties, gatherings and merchandise around the globe. It's even taken on a political significance, with celebrants pushing for its inclusion in religious tributes in state capitol buildings — a protest against what they view as an insufficient separation of church and state.